Read e-book online Advanced Java programming PDF

By Uttam Kumar Roy

ISBN-10: 0199455503

ISBN-13: 9780199455508

Complicated Java Programming is a textbook in particular designed for undergraduate and postgraduate scholars of computing device technology, info expertise, and desktop functions (BE/BTech/BCA/ME/M.Tech/MCA). Divided into 3 elements, the booklet offers an exhaustive insurance of issues taught in complex Java and different similar matters. It first introduces very important language good points akin to mirrored image, JNI, template, AWT and swing, safeguard and so on. the second one half basically specializes in middle community programming ideas reminiscent of sockets, RMI, Mail, XML-RPC and so forth. The state of the art techniques resembling cleaning soap, Applet, Servlet, JSP, JDBC, Hibernate, JMS, J2EE, JNDI, CORBA, JSF and so on. were mentioned within the final half. The content material is more desirable with various illustrations, examples, software codes, and screenshots. With its lucid presentation and inclusion of various real-world examples and codes, the publication may be both worthwhile for Java pros

Triangulations look all over the place, from quantity computations and meshing to algebra and topology. This ebook stories the subdivisions and triangulations of polyhedral areas and aspect units and offers the 1st finished therapy of the speculation of secondary polytopes and similar subject matters. A vital topic of the e-book is using the wealthy constitution of the gap of triangulations to resolve computational difficulties (e.

It is a textual content that covers the normal themes in a sophomore-level path in discrete arithmetic: good judgment, units, evidence options, easy quantity thought, capabilities, family, and trouble-free combinatorics, with an emphasis on motivation. It explains and clarifies the unwritten conventions in arithmetic, and publications the scholars via a close dialogue on how an evidence is revised from its draft to a last polished shape.

This is useful if your program does not take sufficient time to run to create the dump file using jmap command. heap_dump myHeap The dump file is now ready to be used by jhat. Use the following command to start jhat: jhat myHeap JAVA TOOLS 13 If everything goes right, the following message appears: Reading from myHeap... Dump file created Tue Jan 27 12:03:28 IST 2015 Snapshot read, resolving... Resolving 5941 objects... Chasing references, expect 1 dots. Eliminating duplicate references. Snapshot resolved.

A web browser may then be used to get desired data. The web server supports a few pre-designed queries as well as custom queries written in OQL (Object Query Language), which is a language similar to SQL to query heap dumps. java program to demonstrate this tool. To use jhat, we have to dump heap information in a file. There are several ways to generate a java heap dump: • • • • • Use jmap with -dump option to obtain a heap dump at runtime; Use jconsole option to obtain a heap dump via HotSpotDiagnosticMXBean at runtime; Use java by specifying -XX:+HeapDumpOnOutOfMemoryError VM option; Heap dump will be generated when OutOfMemoryError is thrown; Use jcmd; Use hprof.

The last link is interesting as it allows us to write custom queries using OQL. The jhat also provides a useful page to get help on OQL. 6 JDB A good programmer should have good skills to debug programs. This skill enables the programmer to find any subtle bugs or defects which are not visible during code review or comes when a particular situation occurs and removes them. The old method of debugging that uses print statements here and there in the program makes the program simply ugly. Although, they can be removed before delivering the program finally, they make a simple program almost unreadable.